From: "nobu (Nobuyoshi Nakada)" <nobu@...>
Date: 2012-08-01T17:11:56+09:00
Subject: [ruby-core:46910] [ruby-trunk - Feature #6819] OpenSSL::Digest.new should return an instance of the chosen subclass


Issue #6819 has been updated by nobu (Nobuyoshi Nakada).


drbrain (Eric Hodel) wrote:
> I would like this changed so that it returns the specific subclass of OpenSSL::Digest:
> 
>   digester = OpenSSL::Digest.new "SHA1"
>   digester.class #=> OpenSSL::Digest::SHA1

It sounds like quite exceptional.
Rather I'd suggest OpenSSL.Digest() method as well as Digest(), or new similar class method.

> This will also make OpenSSL::Digest.new behave similarly to Digest:
> 
>   digester = Digest("SHA1").new
>   digester.class #=> Digest::SHA1

It differs than your proposal.

----------------------------------------
Feature #6819: OpenSSL::Digest.new should return an instance of the chosen subclass
https://bugs.ruby-lang.org/issues/6819#change-28577

Author: drbrain (Eric Hodel)
Status: Open
Priority: Normal
Assignee: MartinBosslet (Martin Bosslet)
Category: ext
Target version: 2.0.0


=begin
OpenSSL::Digest.new allows you to create a digest given the digest name:

  digester = OpenSSL::Digest.new "SHA1"
  digester.update "hello"
  # ���

The digester returned is of class OpenSSL::Digest regardless of the input type.

I would like this changed so that it returns the specific subclass of OpenSSL::Digest:

  digester = OpenSSL::Digest.new "SHA1"
  digester.class #=> OpenSSL::Digest::SHA1

When multiple digests are created this makes it easier to distinguish the type of digest you are working with.

This will also make OpenSSL::Digest.new behave similarly to Digest:

  digester = Digest("SHA1").new
  digester.class #=> Digest::SHA1

=end


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